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How Can I Create an XY Plot in Signal Express?

Primary Software: LabVIEW Signal Express>>Development System
Primary Software Version: 1.0
Primary Software Fixed Version: N/A
Secondary Software: N/A

Problem:
I am using Signal Express to record signal data from two channels.  I want to plot the data obtained from Channel 1 vs. Channel 0 instead of plotting Channel 1 vs. time and Channel 0  vs. time.  How do I do this?

Solution:
There are two ways to Create an XY Plot, depending on whether you're in Monitor/Record mode or Playback mode. 

 If you are trying to view an XY plot in Monitor/Record Mode:

  1. Open Signal Express
  2. Click on Add Step to setup data acquisition (very similar to tasks in DAQmx) and configure your task.



  3. Click on the blue plus sign to add acquisition from another channel to this step.  You can also add another step to compare a signal from another card.




  4. Click on record and select all of the channels you wish to record.  Your screen should show the signals of that step.


  5. Click on the Data View tab to bring up the graph.



  6. Click on the plus sign to expand the desired step to see the list of channels associated with a certain step.  Click and drag the desired two channels to the black graph in the middle pane.  You can add channels from different steps.  Verify the channels show up on the graph. 


     

  7. Right click on the graph and go to View As»XY Graph



  8. If you want Channel 1 vs. Channel 0 instead of Channel 0 vs. Channel 1, right click on the graph, select Plot Order and choose the desired order.

 

If you are trying to view an XY plot in Playback mode:

  1. To view data as an XY graph in playback mode you must first save the data to an LVM file using the Save to ASCII/LVM step in Monitor/Record mode.


  2. In Playback mode add a Load from LVM step.  Select the LVM file you created in Monitor/Record.

  3. Click and drag the desired two channels to the black graph in the middle pane.  Verify the channels show up on the graph. 

  4. Right click on the graph and go to View As»XY Graph



Related Links:
KnowledgeBase 4ELC36XT: Using SignalExpress to Log Data from a Real-Time Target



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Report Date: 12/18/2007
Last Updated: 11/06/2008
Document ID: 4GHB0B2Z

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